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  • Lunar and Planetary Science and Exploration  (12)
  • METEOROLOGY  (11)
  • 1
    Publication Date: 2011-08-24
    Description: Chemical analyses returned by Mars Pathfinder indicate that some rocks may be high in silica, implying differentiated parent materials. Rounded pebbles and cobbles and a possible conglomerate suggest fluvial processes that imply liquid water in equilibrium with the atmosphere and thus a warmer and wetter past. The moment of inertia indicates a central metallic core of 1300 to 2000 kilometers in radius. Composite airborne dust particles appear magnetized by freeze-dried maghemite stain or cement that may have been leached from crustal materials by an active hydrologic cycle. Remote-sensing data at a scale of generally greater than approximately 1 kilometer and an Earth analog correctly predicted a rocky plain safe for landing and roving with a variety of rocks deposited by catastrophic floods that are relatively dust-free.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Science (ISSN 0036-8075); Volume 278; 5344; 1743-8
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  • 2
    Publication Date: 2006-04-02
    Description: A space vehicle's response to atmospheric disturbances includes many parameters, the choice of criteria (parameters) depending upon the vehicle configuration and the specific mission. Response calculation methods for all phases of vehicle design are separated into their various phases and parts, using different approaches and methods of evaluation, as the particular phase demands. Although not independent, these phases include: (1) preliminary design; (2) final structural design; (3) guidance and control system design and optimization (preliminary and final); and (4) establishment of limits and procedures for launch and flight operations. Thus, the proper selection, representation, and use of wind information require the skillfully coordinated efforts of aerospace meteorologists and engineers.
    Keywords: METEOROLOGY
    Type: Terrest. Environ. (Climatic) Criteria Guidelines for Use in Aerospace Vehicle Develop., 1973 Rev.; 168 p
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  • 3
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    In:  CASI
    Publication Date: 2006-04-02
    Description: Probable climatic extremes of terrestrial environment data specifically applicable for NASA space vehicles and associated equipment development are considered. Design guideline values are established for the following environmental parameters: (1) Thermal (temperature and solar radiation); (2) humidity; (3) precipitation; (4) winds; (5) pressure; (6) density; (7) electricity (atmospheric); (8) corrosion (atmospheric); (9) sand and dust; (10) fungi and bacteria; (11) atmospheric oxidants; (12) composition of the atmosphere; and (13) inflight thermodynamic properties.
    Keywords: METEOROLOGY
    Type: Terrest. Environ. (Climatic) Criteria Guidelines for use in Aerospace Vehicle Develop., 1973 Rev.; 9 p
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  • 4
    Publication Date: 2011-08-16
    Description: The results of a questionnaire designed to gather information on how nonmeteorological scientists and engineers view meteorology and weather forecasting are summarized in this paper. The respondents were from two organizations, Texas A & M University and NASA's Marshall Space Flight Center, the first representing the academic community and the latter the engineering community. While there were some differences between the groups, in most cases answers expressed in the opinionnaire by the two groups were essentially identical. The results revealed the following: Approximately three-fourths of the respondents use meteorological data and/or weather forecasts in their profession; the meaning of probability forecasts is very unclear with only 13% indicating the correct answer; television is the main source of weather information; approximately half of the respondents had never heard of the Global Atmospheric Research Program; and the opinion was almost unanimous that satellites had contributed significantly to weather observations and/or forecasts. Also, the results indicated a number of other ?problem' areas where some improvements are desired.
    Keywords: METEOROLOGY
    Type: American Meteorological Society; vol. 52
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  • 5
    Publication Date: 2011-08-11
    Description: Punch card deck for serially completed upper wind observations as substitute for map scaling
    Keywords: METEOROLOGY
    Type: JOURNAL OF GEOPHYSICAL RESEARCH
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  • 6
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    In:  Other Sources
    Publication Date: 2011-08-12
    Description: All weather wind profile monitoring system using FPS-16 radar/Jimsphere system and flight simulation for protection of space vehicle and missile launches
    Keywords: METEOROLOGY
    Type: ; YAL SOCIETY (
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  • 7
    Publication Date: 2011-08-16
    Description: The Jimsphere/Jimsonde system is described and some possible applications of the system for air-sea interface measurements are presented. As space vehicles became larger and more sophisticated, an improved method for obtaining wind profile data had to be found. To satisfy this need the FPS-16 radar/Jimsphere system was developed. The Jimsphere is an aluminized mylar spherical balloon, two meters in diameter. The balloon is under superpressure, and is tracked with a high precision radar system. The development of this detailed wind profile system was started in 1963, and the present design was established in 1964. To improve the system, a program was initiated in 1965 to obtain high resolution temperature data simultaneously with the wind profile data.
    Keywords: METEOROLOGY
    Type: WMO Means of Acquisition and Commun. of Ocean Data, Vol. 2; p 594-600
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  • 8
    Publication Date: 2018-06-08
    Keywords: Lunar and Planetary Science and Exploration
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  • 9
    Publication Date: 2018-06-08
    Description: This is the second of two papers which summarize orbit determination analysis accoumpliched to date as part of navigation studies for the Cassini mission. The thrust of the analysis has been to characterize orbit determination accuracy to first order for selected phases of the mission.
    Keywords: Lunar and Planetary Science and Exploration
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  • 10
    Publication Date: 2018-06-08
    Description: We have fit numerically integrated orbits of the eight major satellites of Saturn to all available astrometric and meridian circle observations for the period of 1971 to 1992. The integration was carried out in cartesian coordinates in the J2000 system. The force model included the gravitational effects of the oblate primary, the mutual perturbations of the satellites, and perturbations due to Jupiter and the Sun. Values of the gravitational parameters of the Saturnian system, e.g. planet and satellite masses, were taken from Campbell, et. al., 1989, only the epoch state vectors of the satellites were adjusted to obtain orbits which fit the observations. All astrometric data was processed in the form of satellite relative positions which were weighted according to observer and opposition to reflect the varying data quality...
    Keywords: Lunar and Planetary Science and Exploration
    Type: AAS Division on Dynamical Astronomy: Dynamical Astronomy; Santa Barbara, CA; United States
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